履行合同:品质管理

    导语：商场如战场，一步走错步步错，话要说对，事要做对，说话是个大学问，(*^__^*) ……下面就随本站小编一起来学习学习在履行合同时怎么用英语表达吧O(∩_∩)O~~

A: We have some quality-control problems, Mr. Zhang. We need to go to the source to work them out.